Surface treatment method, sliding component and piston

Application Number: 00108114
Application Date: 2000.04.28
Publication Number: 1273281
Publication Date: 2000.11.15
Priority Information: 1999/4/28 JP 120917/1999
International: C23C22/66
Applicant(s) Name: Suzuki K. K.
Inventor(s) Name: Nomura Masaya;Osaki Yoshinobu
Patent Agency Code: 11038
Patent Agent: long chuangong
Abstract This invention relates to a surface treatment method comprising the steps of providing a treating solution containing a specific ammonium compound or aqueous ammonia, and magnesium silicofluoride, heating the treating solution to a temperature of 70 to 100 DEG C., and soaking aluminum or an aluminum alloy in the treating solution; a piston having a surface coated with a film consisting of a mixture of NH4MgAlF6 and MgAlF5.1.5H2O or a mixture of NH4MgAlF6 and MgAl2F8.2H2O.